The cluster of non-linearity coefficient ε curves of scanning circuit;

This paper discussed the relationship among the relative amplitude error of scanning circuit and the power utilization factor,the jumping change and leaping change time,and the relative time error;and also pointed out the relative amplitude error of scanning circuit is a factor(-1 to 1),which has its limit value in practice,and is smaller than the relative time error.

And the use of its sweep circuit is expounded.

In view of the dissatisfactory linearity of the output voltage of the integrating long cycle scan circuit of the ordinary operational amplifier based on the charge and discharge of capacitor, a design of digital scan circuit based on counter and D/A translator is given.

The effect of side chains with different length on the optical properties of two PPV derivatives,poly(2,5-dioctyloxy-1,4phenylenevinylene) and poly(2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylenevinylene),was investigated by absorption spectroscopy,fluorescence spectroscopy and picosecond Z-scan technique.

The third-order optical nonlinearity of inorganic compound RuCl_2(depe)_2 was studied by using Z-scan technique with a double-frequency Nd: YAG laser system at 532nm with pulse width of 8ns, The nonlinear refractive index n_2 of RuCl_2(depe)_2 was measured which was about 5.

The linear and nonlinear optical properties of three porphyrin compounds with different substituents,meso-tetra(p-hydroxyphenyl) porphyrin [T(4-HP)P],meso-tetra(p-esterphenyl) porphyrin [T(4-EP)P] and meso-tetra(p-bromophenyl) porphyrin [T(4-BrP)P] have been investigated by using Absorption spectroscopy,fluorescence spectroscopy and picosecond Z-scan technique.

Theory analysis on Z-scan technique of cascade structure for the nonlinear absorption materials;

Roboticized Laser Beam Z-scan System Based on Labview;

Theoretical analysis of Z-scan using one dimensional partially coherent beams;